锻压技术

矩形管多点压弯成形截面畸变的数值分析

英文标题：Numerical analysis of cross-section distortion of multi-point press bending for rectangular tube

作者：彭赫力李明哲付文智兰英武

单位：吉林大学

分类号：TG386

出版年,卷(期):页码：2012,37(1):87-90

摘要：

基于有限元分析软件ABAQUS，建立了矩形管多点压弯成形三维有限元模型，对比分析了矩形管整体压弯和多点压弯的截面畸变，研究了矩形管多点压弯成形时摩擦系数、管壁厚度、弯曲半径对截面畸变的影响。结果表明:矩形管多点压弯的截面畸变量略大于矩形管整体压弯的截面畸变量，且最大畸变率小于10%；摩擦系数对截面畸变影响较小；管壁越厚，截面畸变越小；弯曲半径越大，截面畸变越小。成形实验验证了矩形管多点压弯成形的可行性。

3D FEM of multi-point press bending of rectangular tube was established based on the analysis software ABAQUS. The cross-section distortion between integral press bending and multi-point press bending of rectangular tube were compared and the effect factors, such as friction coefficient, wall thickness and bending radius were researched for multi-point press bending of rectangular tube. The results show that the cross-section distortion of rectangular tube bended by multi-point die is slightly larger than that formed by integral die, and the maximum cross-sectional distortion of rectangular tube is less than 10%. The friction coefficient has little effect to the cross-section distortion. The thicker the wall thickness is or the larger the bending radius is, the smaller the cross-section distortion of rectangular tube will be. The forming experiment verifies the feasibility of multi-point press bending of rectangular tube.

基金项目：

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